Fixed situation when LuckSystem would stop parsing scripts after finding END opcode
Added handling of TASK, SAYAVOICETEXT, VARSTR_SET opcodes, and fixed handling of BATTLE opcode.
Added opcode names for LB_EN, changed first three opcodes to EQU, EQUN, EQUV as specified in LITBUS_WIN32.exe, added handling of these opcodes in LB_EN.go